The Investigation of a Fiber Optical Aluminum Sensor Using Poly (Vinyl Alcohol) Gel as a Substrate

Abstract

Abstract: An optical sensor responding to Al(Ⅲ) was prepared by covalently coupling morin to poly (vinyl alcohol) via cyanuric chloride. The fluorescence was measured at 490 nm with excitation at 410 nm. The steady-state intensity is reached in 5-10 s, when aluminum ions is added to acetate buffer with pH4. 8. The calibration graph is rectilinear from 3×10^-7mol/Lto 10^-4mol/L. The detection limit is 2×10^-7mol/L. The effects of pH, the amount of immobilized morin and various foreign ions have been studied. The method has been applied to the determination of Al in top water. The results are in good agreement with those obtained by AAS of Al determination.

Key words: Fiber optical chemical sensor, Optrode, Aluminum, Poly (vinyl alcohol) gel

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Ma Wang-bai, Zhang Zhu-jun . The Investigation of a Fiber Optical Aluminum Sensor Using Poly (Vinyl Alcohol) Gel as a Substrate[J]. Chem. J. Chinese Universities, 1991, 12(10): 1304.

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The Investigation of a Fiber Optical Aluminum Sensor Using Poly (Vinyl Alcohol) Gel as a Substrate

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